graphANNIS

This is a new backend implementation of the ANNIS linguistic search and visualization system (http://corpus-tools.org/annis/).

Only a sub-set of the ANNIS Query Langugage (AQL) from ANNIS version 3 (based on PostgreSQL) is supported yet. More operators can be added in the future, but the ones missing are the ones which have been used less frequent. There is a tutorial in the Developer Guide on how to embedd graphANNIS in your own application.

The basic design ideas and data models are described in detail in the PhD-thesis "ANNIS: A graph-based query system for deeply annotated text corpora". The thesis describes a prototype implementation in C++ and not Rust, but the design ideas are the same. Noteable differences/enhancements compared to the thesis are:

Graph storages implement querying inverse edges and finding reachable nodes based on them: this allows to implement inverse operators (e.g. for precedence) and switching operands in situations where it was not possible before.
The data model has been simplified: the inverse coverage component and inverse edges in the left-/right-most token component have been removed.
Additional query language features are now supported.

How to compile

graphANNIS is written in the Rust programming language (https://www.rust-lang.org). You can install Rust from https://www.rust-lang.org/tools/install. After you have installed Rust, you can can build the complete project with

cargo build --release

Documentation

Developer Guide (including descriptions of the data model and tutorials for the API)
API documentation

3rd party dependencies

This software depends on several 3rd party libraries. These are documented in the "third-party-licenses.html" file in this folder.

Language bindings

Java: https://github.com/korpling/graphANNIS-java
Python 3: https://github.com/korpling/graphANNIS-python
Rust (this repository)
C (this repository)

Author(s)